Engine.



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R. J. A. & J. N. PRINCE. ENGINE.

.APPLIOATION FILED JUNI'. 27, 1908.

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Patented Jau-5, 1909.

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ENGINE.

APPLICATION FILED JUNE 27, 190e.

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UNITED STATES vPATENT OFFICE.

ROSARIO JOSEPH ANTONIO PRINCE AND JOSEPH NAPOLEON PRINCE, OF ST.BONIFACE,

MANITOBA, CANADA.

ENGINE Specification of Letters Patent.

Patented Jan. 5, 1909.

To all 'whom it may concern:

Be it known that we, ROSARIO J. A. PRINCE and JOSEPH N. PRINCE, bothsubjects of the King of Great Britain, and residents of St. Boniface,Province of Manitoba, Dominion of Canada, have invented a new andImproved Engine, of which the following is a full, clear, and exactdescription.

Our invention relates to engines, our more particular purpose being toproduce a type of engine in which a plurality of pistons are movablerelatively to each other in a single cylinder, for the purpose ofapplying power to more than one point upon the shaft, thus eiiecting aneconomical use of the expansive medium, avoiding excessive lost motion,and attaining many special advantages in construction and operation.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the iigures.

Figure 1 is a substantially central vertical section through a steamengine made in accordance with our invention, this engine being providedwith a cylinder having three pistons movable relatively thereto and toeach other, the engine having two connecting rods; the view furthershowing the various inlet and outlet ports and the slides of the engine;Fig. 2 is an enlarged cross section upon the line 2-2 of Fig. 1, showinghow the two sliding heads of the engine are fitted relatively to eachother and are mounted in the slideways Fig. 3 is a view partly in planand partly in horizontal section on the line 3-3 of Fig. 1, showing howthe two connecting rods are pivoted, one to a sliding sleeve and theother to a sliding rod having a bearing within said sleeve, and furthershowing how the sliding head carried by the sliding rod is fittedrelatively to the sliding head carried by the sleeve and Fig. 4 is aperspective showing the sliding rod, the sleeve encircling the same, thesliding head carried by the sliding rod, and the sliding head carried bythe sleeve.

A main shaft is shown at 5 and a ily wheel mounted thereon at 6. At 7, 8are crank disks connected together by a boxed crank pin 9. Another boxedcrank pin 9L is mounted upon the crank disk 8. Connecting rods `10, 11extend arallel with slideways 12, 13, and connecte with these slidewaysare spacing bolts 14 and spacing sleeves 15,;

for the pur ose of maintaining the slideways in proper a inement. Aslide 16 is provided with a pin 18 held in place by a nut 17, and theconnecting rod 10 is journaled upon this pin. The slide 16 is furtherprovided with a ead 19 for the better accommodation of the pin 18 andparts immediately adjacent to the same. This head is provided with abearing portion 17 a engaging the slideway 12, and the head contains aslot 20 (see Fig. 4). The slide 16 is provided with a groove 21 and iit`ting into the latter is a tongue 22, this tongue being integral with asliding head 23 which is provided with a slot 24.

A pin 25 is mounted within the sliding head 23 and extends across theslot 24, the pin being held in place by a nut'26. The connecting rod 11is journaled upon this pin. The sliding head 23 is provided with abearing portion 26ab which engages the slideway 13 in the same mannerthat the bearing portion 17a engages the slideway 12. Integral with theslide 16 is a sleeve 27 and this sleeve is connected rigidly with apiston 28 which is mounted within a cylinder 29 provided with heads 30,32. The head 30 is rovided with a central opening 31 throng which thesleeve 27 extends. The sliding head 23 is connected with a sliding rod33 which extends through the sleeve 27.

Mounted upon the sliding rod 33 is a piston 34 secured in position byaid of a nut 35. Another piston 36 is secured upon rods 37 by aid ofnuts 38. The rods 37 extend through stufling boxes 39 and are secured tothe piston 28 by aid of nuts 40. The rods 37 therefore constitute arigid connection from the piston 28 to the piston 36, these pistons andthe rods 37 being movable as a unit relatively to the piston 34 and therod 33.

The sleeve 27 terminates at one of its ends in a stuffing box 41 whichencircles the sliding rod 33, An eccentric 42 (see left of Fig. 3) ismounted upon the shaft 5 and is connected by an eccentric rod 43 with alever 44, this lever being mounted upon a stationary pin 45`secured uponthe framework 46. A valve stem 47 is connected with the lever 44.

At 48 is shown a steam chest, and connected with the latter is a steampipe 49. Mounted within the steam chest is a slide valve 50 and disposedbelow the latter are passages 51, 52Afor live steam and a passage 53 forexhaust steam. Oilcups are shown at 54, 55 and are provided with tubes56, 57 for discharging oil into the passages 51, 52, and thence into thecylinder.

Oil tubes 53, 59 are connected directly With the cylinder and areprovided with hand valves 60, 61 for discharging the oil and condensedsteam which may accumulate within the cylinder. At 32 a is a passageconnecting together the ends of the cylinder. This passage is in directcommunication with the outer atmosphere by aid of a pipe 62. A pipe63 isconnected with the exhaust passage 53 for the purpose. of throwing; off.the exhaust steam as the latter isliberated.

Our invention is used as follows: Steam being admitted into. thev steamchest 48 through the steam pipe 49, iiows alternately into the passages51, 52, and the exhaust steamk from the cylinder. is alternatelyadmitted through these passages to the exhaust passage 53. rFhis part ofthe mechanism is substantially similar to the corresponding part of anordinary steamengine. The beavior of the steam, after passing into thecylinder, however, is different. With the parts in the positionindicated in Fig. 1, steam ispassing through thev passage 51 and intothe cylinder at a pointv intermediate the pistons 34, 36, these pistonsbeing thus forced apart. The connecting rod 11 is moved to the left,andthe connecting rod 10 is moved to the right, according to Fig. 1', soas to turn the main shaft in a contraclock- Wisedirection, accordingtothis figure. An instant later, however, a movement ofthe slide valve 50uncovers the passage 52 so as to admitlive steam and covers the passage51 soas to connect it with the exhaust passage 53. This causes thepistons 28, 34 to move apart, the piston 36, ofcourse, moving to theleft. The connecting rods 10, 11 now nish their respective revolutions.

It will be noted that the sliding heads 19, 23 are not only slidable inrelation to the slideways 12, 13, but are slidable relatively to eachother because of the sliding of the tongue 22 in the groove 21, as willbe seen from Fig. 4. By this arrangement the various. parts receivingthe steam thrust are maintained at all times asnearly as practicable inproper alinement. There-can be no jumping or other form of lost motion,due to the fact that the direction of pressure fails to coincide withthe direction in which the power is to be applied while beingtransmitted to the connecting rods. It will also be noted that owing tothe sleeve 27 being .integral with the slide 16, these parts areexceedingly simple and are not likely to get out of order.

While we show our invention as applied to a steam engine, we do notlimit ourselves to this articular use, as the invention may be emp oyedin connection with engines of various other kinds.

Having thus described our invention, We

claim as new and desire to secure by Letters Patent:

1, In an engine, the combination of a slideway, a slide engaging thesame and movable relatively thereto, said slide being provided With agroove, a second slideway, a slide movable relatively to the same, saidsecond-mentioned slideway being provided with a tongue slidably fittinginto said groove of said first-mentioned slide, connecting rodsjournaled to said slides, a revoluble shaft, connections from saideonnecting-rodsto said shaft, acylinder, and a4 plurality of pistonsmounted therein and lmovable relatively thereto, two'of said pistonsbeing connected togethery and being further connected to one of. saidslides, the other piston being connected with, the other of saidslides.

2. In an engine, the combination-of a slide having a sliding headintegral therewith, said slide being provided with a groove, and saidsliding head being provided with a slot, a connecting rod journaledWithin said' slot, a second. sliding head movable relatively to saidfirst-mentioned slide, said second-mentioned sliding head being providedwith a tongue slidably engaging said groove, said second-mentionedsliding head being-further provided with a slot, a 'connecting rodjournaled within said slot, a revoluble-member, connections from saidconnecting rods to said revoluble member for the purpose of turning thelatter, a sleeve integral with said first-mentioned slide, a sliding rodextending through said sleeve and connected with said second-mentionedsliding head, a cylinder, pistons mounted therein and spaced rigidly inrelation to each other, said pistonsbeing connected with said sleeve andadapted to move the latter, and a single piston connected with saidsecond-mentioned sliding head and movable relatively to saidfirst-mentioned pistons.

3. In an engine, the combination of'slideways, sliding members engagingthe same and movable relatively to each other, one of said slidingmembers being provided with a groove of substantially semicylindricalconformity, the other of said members being provided with a tongue ofsubstantially semicylindrical conformity, said tongue fitting into saidgroove, thereby enabling said sliding members to slide relatively toeachother as well as to said slideways, a plurality of pistons, connectionsfrom said pistonsto said sliding members for the purpose of actuatingsaid sliding members, and connections from said sliding members to themechanism to be driven.

4. In an engine, the combination of a cylinder, a steam chest, thecylinder being provided with ports communicating with said steam chest,a slide valve in said steam chest, slideways, sliding members engagingthe slideways, the said members having a tongue and groove connection topermit the members to slide relatively to each other, a piston mountedwithin said cylinder, and disposed intermediate the said ports, aconnection between the said piston and one oi' said sliding members, twoother pistons mounted within said cylinder and spaced apart, said lastmentioned pistons being movable as a unit relatively to said firstmentioned piston and being adapted to travel in those parts oi' saidcylinder intermediate the ends of the latter and the said ports, aconnection between said pistons and the other sliding member, andconnections between said sliding members and the mechanism to be driven.

In testimony whereof we have signed our names to this speeiiication inthe presence of two subscribing witnesses.

ROSARIO JOSEPH ANTONIO PRINCE. JOSEPH NAPOLEON PRINCE.

Witnesses:

NOL BERNIER, J. A. BEAUPRE.

